Comment by pif

> The Lettre Verte example actually reinforces the point: service got slower, then slower again, not because physics demanded it but because maintaining the previous standard became inconvenient.

Well, it did indeed become inconvenient... for the customers!

Rule no. 0 of economics states that a decreasing demand yields decreasing prices, but rule no. 1 concerns fixed costs: when demand is too low, each customer has to bear a larger share of them.